Area Code 201: Comprehensive Guide to Technical Specifications and Data

Info: Area code 201 is part of the North American Numbering Plan (NANP), serving northeastern New Jersey, including Hudson and Bergen counties.

Basic Technical Specifications

NPA Code: 201
Type: Overlay with area code 551
Implementation Date: 1947
State: New Jersey

Geographic Data

Area code 201 encompasses the northeastern region of New Jersey, primarily covering Hudson and Bergen counties, adjacent to New York City.

Major Cities

Bayonne, NJ (40.66871, -74.11431)
Bergenfield, NJ (40.9276, -73.99736)
Cliffside Park, NJ (40.82149, -73.98764)
Englewood, NJ (40.89288, -73.97264)
Fair Lawn, NJ (40.94038, -74.13181)
Fort Lee, NJ (40.85093, -73.97014)
Hackensack, NJ (40.88593, -74.04347)
Hoboken, NJ (40.74399, -74.03236)
Jersey City, NJ (40.72816, -74.07764)
Kearny, NJ (40.76843, -74.14542)
North Bergen, NJ (40.80427, -74.01208)
Paramus, NJ (40.94454, -74.07542)
Ridgewood, NJ (40.97926, -74.11653)
Teaneck, NJ (40.8976, -74.01597)
Union City, NJ (40.77955, -74.02375)
West New York, NJ (40.78788, -74.01431)

Numbering Statistics

Total Numbers Available: Approximately 7.92 million (combined with 551)
Utilization Rate: 70%
Exhaust Projection: 2025

Network Infrastructure

Major Carriers

Verizon: 45%
AT&T: 30%
T-Mobile: 15%
Others: 10%

Types of Services Available

Landline
Wireless
VoIP

Regulatory Framework

Regulatory Body: New Jersey Board of Public Utilities (NJBPU)
Dialing Requirements: Ten-digit dialing mandatory since December 1, 2001
NANPA Regulations: Compliance with NANPA's numbering resource optimization and area code relief planning

Historical Technical Milestones

1947: Area code 201 was the first-assigned NPA code in the NANP.
1951: First direct-dialed long-distance call made from Englewood, NJ to Alameda, CA.
1956: Split to form area code 609.
1991: Split to form area code 908.
1997: Split to form area code 973.
2001: Overlay with area code 551.

Conclusion

Area code 201 is historically significant as the first-assigned NPA code in the NANP. It continues to serve a densely populated region in northeastern New Jersey. The overlay with area code 551 and the implementation of ten-digit dialing have ensured sufficient numbering resources to meet the demand in this region.